qpainter\main.cpp
........\mainwindow.cpp
........\mainwindow.h
........\mainwindow.ui
........\myimgtest.cpp
........\myimgtest.h
........\qpainter.pro
........\qpainter.pro.user
........\thread.cpp
........\未命名文件夹\MyImgTest.cpp
........\............\MyImgTest.h
........\未命名文件夹
qpainter